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14-07-2024 18:23

Joaquin Martin

Hi,I found this Ascomycete on horse dung.The spora

13-07-2024 19:50

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hamatocanth

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

11-07-2024 14:29

Viktorie Halasu Viktorie Halasu

Hello, a thin-fleshed Mollisia on a monocot stem

08-07-2024 23:34

Villalonga Paco

Small Scutellinia growing in garden soil (calcareo

12-07-2024 02:12

Stefan Jakobsson

On a wet lake shore I found a single minute apothe

11-07-2024 10:57

Viktorie Halasu Viktorie Halasu

Hello, I have here a Mollisia on a leaf (possibly

07-07-2024 10:07

Thomas Flammer

I am struggeling with some tiny yellowish apotheci

09-07-2024 19:34

Kozak Robert

HelloDate: 2024.06.18, loess gorges, on soil (?)A

11-07-2024 15:05

Thomas Læssøe

https://svampe.databasen.org/observations/10423287

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Unknown perithecia on Osmunda!
François Bartholomeeusen, 06-05-2024 10:02
Good morning,

At the end of an excursion in De Zegge Nature Reserve on April 25, 2024, I randomly took some old Osmunda stems for research.
At home I was able to identify Urceolella aspera, but with other ascomata on those stems my determination failed.
Irregularly shaped black spots were located in the vicinity of U. aspera. After the stems were soaked in water, those spots burst open slit-shaped and the hymenium was visible.

Asci: 45 x 8 µm, clavate, probably bitunate, no croziers, IKI + blue
(Pseudo) Parafysen: 42 x 1.8 µm, curled at the top and sometimes branched;
Spore: (7.5) 8.1 - 10.5 (11.1) × (2.4) 2.6 - 3.3 (3.4) µm; Me = 9.3 × 2.9 µm; Qe = 3.2; 
uninucleate, lacrymoid;
Textura peridium: globosa angularis.

Could the genus be Leptopeltis?
Any help is welcome,
Regards,

François
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
François Bartholomeeusen, 08-05-2024 16:03
Re : Unknown perithecia on Osmunda!
I forgot to mention that I found generative hyphae up to 3.5 µm wide!
See attached photos (second in Congo Red)


  • message #79202
  • message #79202